Swash plate compressor

A swash plate compressor comprising:

• a housing;
• a rotating shaft rotatably mounted to the housing;
• a swash plate accommodated in a crank chamber of the housing and rotating together with the rotating shaft;
• a piston forming a compression chamber together with the housing and interlocking with the swash plate to reciprocate;
• a discharge flow path for guiding a refrigerant of the crank chamber to a suction chamber of the housing such that an inclination angle of the swash plate is adjusted;
• and
• a discharge flow path control valve having a valve chamber provided in the discharge flow path and a valve core reciprocating inside the valve chamber, wherein the valve core comprises a first communication path for constantly communicating the discharge flow path and a second communication path for communicating the discharge flow path when a differential pressure between a pressure of the crank chamber and a pressure of the suction chamber is within a certain pressure range, wherein the discharge flow path control valve is formed to adjust a cross-sectional flow area of the discharge flow path to be equal to a first area when the differential pressure is equal to or less than a first pressure or equal to or greater than a second pressure, and is formed to adjust the cross-sectional flow area of the discharge flow path to be greater than the first area when the differential pressure is greater than the first pressure and less than the second pressure.

A swash plate compressor comprising:

• a housing;
• a rotating shaft rotatably mounted to the housing;
• a swash plate accommodated in a crank chamber of the housing and rotating together with the rotating shaft;
• a piston forming a compression chamber together with the housing and interlocking with the swash plate to reciprocate;
• a discharge flow path for guiding a refrigerant of the crank chamber to a suction chamber of the housing such that an inclination angle of the swash plate is adjusted;
• and
• a discharge flow path control valve having a valve chamber provided in the discharge flow path, a valve core reciprocating inside the valve chamber, a valve inlet through which the crank chamber communicates with the valve chamber, a valve outlet through which the suction chamber communicates with the valve chamber, and an elastic member for pressing the valve core toward the valve inlet, wherein the valve core comprises a first communication path for constantly communicating the discharge flow path, a second communication path for communicating the discharge flow path when a differential pressure between a pressure of the crank chamber and a pressure of the suction chamber is within a certain pressure range, a base plate having a first pressure surface opposite to the valve inlet and a second pressure surface opposite to the valve outlet, and a side plate protruding annularly from an outer periphery of the second pressure surface, wherein the first communication path is formed through the base plate from the first pressure surface to the second pressure surface, and wherein the second communication path is formed through the side plate from an outer peripheral surface of the side plate to an inner peripheral surface of the side plate.